Comparison of nonself‐tapping tapered implant and self‐tapping hybrid implant in terms of implant stability at initial and second fixation: A prospective randomized clinical trial. (13th October 2020)

• Record Type: Journal Article
• Authors: Moroi, Akinori; Saito, Yuki; Takayama, Akihiro; Ueki, Koichiro
• Is Part Of: Clinical implant dentistry and related research. Volume 22:Number 6(2020)
• Page Start: 679
• Page End: 688
• Publication Date: 2020-10-13
• Subjects: Dental implants -- Periodicals; Dental Implantation -- Periodicals; Dental Implants -- Periodicals; 617.693
• DOI: 10.1111/cid.12951
• Languages: English
• ISSNs: 1523-0899

Abstract

Abstract: Background: Various features are provided in dental implants to improve initial fixation. Purpose: To compare the implant stability of the nonself‐tapping tapered implant and self‐tapping hybrid implant over a 3‐month healing period. Materials and methods: A randomized controlled trial was conducted. Patients were randomly divided into tapered and self‐tapping groups. Patients in the tapered group received NobelReplace Tapered (Nobel Biocare, Sweden) implants, while those in the self‐tapping group received NobelSpeedy (Nobel Biocare, Sweden) implants. Implant stability was measured by resonance frequency analysis at surgery and 3 months following implant insertion. Data were analyzed using an independent t ‐test. Results: Forty‐three patients (tapered group: 21, self‐tapping group: 22) received a total of 88 implants. Initial stability in the tapered group was significantly higher (mean: 60.14, SD: 12.40) than that in the self‐tapping group (mean: 54.72, SD: 7.92). Implant stability significantly increased 3 months after implantation in the tapered group (mean: 66.61, SD: 9.00) and self‐tapping group (mean: 64.01, SD: 5.78). No significant intergroup difference in implant stability was noted 3 months after surgery. Conclusions: The tapered shape affected initial fixation more than the self‐tapping function. However, during the second fixation, both implants showed good stability, and the difference disappeared.